1PQS:
reference: The solution structure of an N-terminally truncated version of the yeast CDC24p PB1 domain shows a different beta-sheet topology., Leitner D, Wahl M, Labudde D, Krause G, Diehl A, Schmieder P, Pires JR, Fossi M, Wiedemann U, Leidert M, Oschkinat H, FEBS Lett. 2005 Jul 4;579(17):3534-8. PMID: 15961083

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